Asked by Anonymous

5x + 2y = -1
3x + 7y = 11
Answered by bobpursley
I would solve this by multiplying the top equation by 3, and the bottom equation by 5, then subtracting one from the other.
Answered by Brit
after you multiple the top by 3 and the bottom by 3 you have to either multiple the top by a negative or the bottom so that when adding the x's they cancel out to equal 0. then add the y's and the other numbers. then divide to find y.

heres the first step for starters


5x + 2y = -1 15x + 6y = -3
3x + 7y = 11 15x + 35y = 55

then either change the top or bottom to all negatives and go on from there